Improvement in door-looks



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N. PETERS. PHOTO-LITHOGRAPHER, WASHINGTON. D. C.

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WILLIAM I. AND J. WHARRIS, 0F N EWPORT, NEW YORK.

Leners Patent No; 64,975, ma May 21, 1861.

IMPROVEMENT nl Doos-Leers.

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TO ALL WHOM IT MAY CONCERN:

Be it known that we, WILLIAM I, HARRIS and JTW. HARRIS, of Newport, in the county of Herkimer, and `State of New York', have invented certain new and useful Improvements in Door and other Locks; and we do hereby declare the following to be a. full, clear, and exact description of the same, reference beinghad to the nccon'ipan-ying drawings, making a part of'this speciiicatioln,` in whichl Figure represents a view ofthe lock with the top plate or cover removed vto-show the interior thereof. Figure 2 represents a view oi"` the lock, with the top p late and thev slide' both'removed to show the parts under' the slide. v

Figures 3 and 4 represent sections through the lock taken at the red linea' a: of iig. 2, the key being removedin iig. 3. and in its position 'in iig. 4.

Similar letters of reference, where they occur in the separate iignres,denote like parts of the lock in allot'.

the drawings. v l V Ourinven-tion consists, first, in the combined use of an eccentric and slide in connection with the key for the purpose of moving the bolt, by which means a very smooth, quick, continuous, and durable movement is secured, and the bolt firmly held in any and all of its movements; andour inventionfurthcr consists in combining with the eccentric-and slide a stop, against which the slide impinges at the exact point in .boththe locked and unlocked positions to admit of the use of the key. v V

To enable others skilled in the art to make and use our invention we will rocced t'o describe the samewith l i P e reference to thc drawings.

The caseor shell of the lock may be of any suitable size and shape, and in the interior is vfirmly attached a circular hub, a, with hollow or chambered radial arms 6 upon itdiametrically opposite each other. Inthe chambers of these arms is arranged a series of bolts or studs, c, with springs e, behind them for projecting them from their chambers.v Inside of the hub or ring laftlrere is fitted a cylinder, cl, so that it may be turned by the key B when inserted. l This cylinder has a key-hole,f, made through it, so that, with the holes in the lock-case and cap or cover, the key may beinserted from either side of the lock. At right angles to the' line of the key-hole', in thecylinder, and opposite to the spring-bolts or studs c, there is arranged a series of tumblers .or pins, z', one for each spring-bolt. These tumblers or pins project into the key-hole, and the insertion of the key in the hole moves them back, and they in turn move back andl arrange the spring-bolts or studs in line and exactly on the line between the cylinder d and the hub or ring a, so that the cylinder may be turned by the key. When the key is withdrawn the springs c shoot their bolts across or past the joint between the cylinder and hub 'or ring, and thus lock the two parts firmly together; nor can the tumblers and bolts be arranged'to admit of thecylinderbeing moved by any other instrument than the proper key, because if the tumblers or pins be moved in the slightest degree beyond the exact point, as they can be moved, they become locking-bolts, and if .the spring studs be not moved to the exact point they continue to act as lockingbolts to the cylinder, vso that the 'exact' positions they must assume cannot be felt by a piek or any other instrument than the key specially made for the lockas is Well understood in locks of this description. To the cylindervd is secured eccentrically, as at m', a disk, al1., with a hole through it to match the key-hole; and this disk turns with the cylinder only. Over the disk or eccentric n is placed a sliding plate, C, that has a circular opening through it to admit the eccentrica l and this plate C lies upon the lock-bolt D, being kept in proper position thereon by lugs or projections O O O.

The turning of the eccentric n causes the sliding'plateC to move in two directions,` viz, laterally, to move the lock-bolt D ont or in, as the case may be, and longitudinally until it comes against one or the otherof the stops r r, there being one' at each end of the lock-case; and these stops hold the slide at-the exact position orpoint in both the locked and unlockedl positions to admit of the use of the key, or of its withdrawal from the lock. As the stopping of the plate C at the'exactpoint is important in the' use and-disuse of the key, therplate, and stops, one or both, may be of steel orother hardened metal, toprevent wearing, or, as shown at s, fig. 1, a steel or other hard pin may be used, which can bereplaeed or adjusted should any undue wear take place. The stops r we use, also, to pass the screws through for holding the plate orvcovr to the lock-case, but, ofcourse, oan'be stops without such use. The bolt is guided as it moves out and in by lugs t, and the positions ofthe bolt, slide, and eccentric are shown in black lines and red lines in fig. 1, the black lines showing thebolt as drawn into the lock, and Vthe red lines as shot out to take the keeper; In the ends of the arms 6 thereare slides or covers u, which may be withdrawn to `goin access to the springs and bolts in said arms, to pluce,removc,'or 'replace them when necessary to do so. The portion of the key that enters dnnlly therein on Aopposite sides, or diametrically opposite Aeach other; and the bottoms of these grooves vare cut into n series of curved or inclined planes, as shown at v, fig. 4, so as to ori-ange the bolts c properly through the pins z' of varied lengt-lhs.

Having thus fully described our invention, what we clnm tl\e'rein as new, and desire to -secure by Letters Patent, is

1*.. In combination with the key for arranging the tumblers, the eccentric and slide for moving the lockbolt, substantielljr as described. v

2. We also claim, irl-combination with the slide, the stops, against which it impinges or brings up :tt the exact point in both the locked or unlocked positions for the admission and Withdrawal of the key, substantially as described.

W. I. HARRIS,

J. W. HARRIS.

Witnesses:

NEWELL MOREY, J. G. BARRY.

the lock is round, with At\\o grooves cut longitibl l 

